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Articles Tagged
custom properties

95 Articles
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,

}
Direct link to the article Quick Hit #81
!important CSS css variables custom properties

Quick Hit #81

Chris Coyier swiftly demonstrates how !important works with CSS variables.…

Daniel Schwarz on Jan 7, 2026
Direct link to the article Quick Hit #70
CSS css variables custom properties firefox media queries

Quick Hit #70

Firefox 146 becomes the first to trial @custom-media, an at-rule that’s like custom properties but for media queries.…

Daniel Schwarz on Dec 15, 2025
interface designed to appear like an elevator button panel, with four buttons labelled 1, 2, 3, 4, on the left side is a block containing an arrow pointing up as the direction the elevator is traveling
Direct link to the article CSS Elevator: A Pure CSS State Machine With Floor Navigation
animation custom properties forms

CSS Elevator: A Pure CSS State Machine With Floor Navigation

In this article, author Chris Sabourin walk through how modern CSS features can build a fully functional, interactive elevator that knows where it is, where it’s headed, and how long it’ll take to get there. No JavaScript required.
Christian Sabourin on Aug 29, 2025
Direct link to the article 3D Layered Text: Interactivity and Dynamicism
animation background custom properties

3D Layered Text: Interactivity and Dynamicism

In this third and final chapter, we’re stepping into interactivity by adding JavaScript, starting with a simple :hover effect, and ending with a fully responsive bulging text that follows your mouse in real time.
Amit Sheen on Aug 22, 2025
Direct link to the article Maybe don’t use custom properties in shorthand properties
cascade custom properties

Maybe don’t use custom properties in shorthand properties

This easily qualifies as a "gotcha" in CSS and is a good reminder that the cascade doesn't know everything all at the same time. If a custom property is invalid, the cascade won't ignore it, and it gets evaluated, which invalidates the declaration.
Geoff Graham on Mar 6, 2025
Direct link to the article Calculate Viewport Size in CSS
custom properties functions viewport units

Calculate Viewport Size in CSS

A way to calculate the viewport’s width and height without JavaScript, by way of Temani Afif over at CSS Tip:

@property --_w {
  syntax: '<length';
  inherits: true;
  initial-value: 100vw; 
}
@property --_h {
  syntax: '<length';
  inherits: true;
  
…
Geoff Graham on Jul 17, 2024
Direct link to the article “If” CSS Gets Inline Conditionals
custom properties selectors

“If” CSS Gets Inline Conditionals

A few sirens went off a couple of weeks ago when the CSS Working Group (CSSWG) resolved to add an if() conditional to the CSS Values Module Level 5 specification. It was Lea Verou’s X post that same day that …

Geoff Graham on Jul 9, 2024 Updated on Jul 19, 2024
Direct link to the article How I Made an Icon System Out of CSS Custom Properties
custom properties Sass SVG svg icons

How I Made an Icon System Out of CSS Custom Properties

SVG is the best format for icons on a website, there is no doubt about that. It allows you to have sharp icons no matter the screen pixel density, you can change the styles of the SVG on hover …

Louis Hoebregts on Sep 22, 2022 Updated on Sep 28, 2022
Direct link to the article Making a Real-Time Clock With a Conic Gradient Face
conic gradients custom properties dates gradients

Making a Real-Time Clock With a Conic Gradient Face

Gradients have been a part of the CSS spectrum for quite some time now. We see a lot of radial and linear gradients in a lot of projects, but there is one type of gradient that seems to be a …

Brecht De Ruyte on Sep 19, 2022
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